Mixing device



Maid, 19,1940.

BAKER MIXING DEVICE Filed Sept. 50, 1938 [ma 7'7? G: Edie r,

Patented Mar. 19, 1940 2,194,377 7 MIXING Davies Erwin G. Baker, Indianapolis, Ind. Application-September 30 1938, Serial No. 232,514 I 5 Claims.

This invention relates to means 'for breakin up any unvaporized globules of fuel and minutely atomizing all molecules of hydrocarbon vapors and air for explosion in internal combustion engines; after the mixture of fuel and air has left the carburetor and before it has reached the explosion chamber ofthe engine. It is adapted for motor car, airplane, stationary and all hydrocarbon explosive engines. I

Manifestly the finer the atomization of the hydrocarbon vapors the more intimately they may be made toncontact and mix with the air supplied to it at the carburetor and the quicker and more perfectv the combustion will be when the mixture is fired.

The object of this invention, is to provide a device with numerous sharp edges against which the rushing mixture will be impacted and its molecules cut and broken into small particles, and in which vacuum recesses will be provided between the cutting edges into which the vapors will be drawn and with walls against which the separated atoms will be swirled to intimately mix the hydrocarbon vapors with the air.

A further object is to hold the device in the most effective position under the discharge side of the butterfly valve and to produce a Venturi action with the device which will accelerate the movement of the vapors through the intake mani fold into the engine.

Another object is to provide a device which can be made and sold independently of the engine on which it is to be used, and to provide an efficient fuel mixer at a low cost. v

I accomplish the above and other objects which 'will hereinafter appear, by the means illustrated in the accompanyingdrawing, in which Fig. 1 is a fragment in elevation and vertical section of an intake manifold of an engine with my device applied; and v Fig. 2 is a top plan view ofsame on the line 2-2 of Fig. 1 showing my device broken away in part and showing my preferred manner of supporting it in the intake manifold.

Like characters of reference indicate like parts of deep annular channels 5, which preferably combine to form a series of sharp cutting edges 6.;

An annular. groove 1 at the junction plane of the two cones is formed in which a pair of conesupporting wires 8 and 9 are placed. The ends 4; of these wires are twisted together as shown at l and II in Fig. 2, to hold the wires in the groove 1. I

This device is assembled in the intake manifold pipe of an engine opposite the joint between the pipe l2 coming from a carburetor (not-shown) and pipe I 3 leading to the engine (not-shown).

The pipe ends to be joined have ears [4 with threaded holes receiving bolts I5 to draw the ends together and a gasket [6 of a suitable material somewhat yielding under pressure, is introduced between the ends in the usual way to make a tight joint.

The manifold pipe l2 has a butterfly valve 11 of usual construction to control ,the vapor flow through the manifold.

The major diameter of my double cone device is about three-fourths that of the inside diameter of the manifold pipe, and my device is assembled directly under the discharge side of the valve 11, against the wall of the manifold pipe on that side, as shown in the drawing, where it is supported and held by the wires 8 and 9. The ends l0 and II of the wires 8 and 9 are clampedby bolts between the ends of the manifold members l2 and I3, with the wire-ends embedded in the gasket [6. This gasket may be in two thicknesses as shown in Fig. 1, with the wires held between them, or a gasket of-a single thickness will sufiic'e, in which case the wires will become embedded in it by the tightening of the bolts. In any event, the device. is held securely shown. a

The operation of my device is as follows: When the valve I1 is opened, more or less according to speed requirements,hydrocarbon vapors and air from the carburetor pass down by the suction of the engine, in the direction of the arrow in Fig. 1, into contact with the sharp edges t which cut up unvaporized globules and dash the fragments against the sides of the channels 5. The rapidly moving vapors create vacuums and partial vacuums in the channels 5 which draw vapors in andhurl them against the channel .walls; also creating a swirl and eddy that intimately mixes the air and hydrocarbon atoms. I

The double cone causes a. Venturi action'which aids materially in overcoming the drag caused by the obstructing presence of the device in the manifold pipe, and continues the mixing action on the explosive mixture.

While I have herein shown and described my invention in the one best form as now known to me, it is obvious that structural variationsmay be employed without departing from the spirit in the position as i of the invention, and I, therefore, do not desire to be limited to that precise form beyond the limitations as may be imposed by the following claims.

I claim:

1. A gas mixing device for mounting in the intake manifold of an internal combustion engine comprising a plurality of axially spaced apartprising a unitary member formed to have a plu-- rality of axially spaced apart encircling ribs concentric of the member axis, the edges of which ribs define parallel planes normal to said axis, said ribs increasing in diameter one after another from one end of the member to the center thereof and then decreasing to the opposite end giving said member a double cone peripheral shape, and each of said ribs having a' decided recess extending back under it toward said axis. i p

3. A. gas mixing device for mounting in an internal combustion engine intake manifold comprising a unitary member formed to have a plurality of axially spaced apart encircling ribs'concentric of the memberaxis, the edges of which ribs define parallel planes normal to said axis, said ribs increasing in diameter one after another from one end of the member to the center thereof I 4. A gas mixing device for-mounting in a gas engine intake manifold comprising a double cone body terminating in oppositely directed apices and having a plurality of annular grooves therearound defining projecting fins therebetween of increasing diameters from said apices to the center of the body, each of'said grooves being shaped to define a reentering space into the body from and under an upper fin and to define a laterally projecting sharp edge on the fin.

5. In combination with a constant diameter section of a gas engine intake manifold receiving the discharge of a carburetor having a butterfly valve, a mixing device circular in cross-section and mounted in said manifold eccentrically thereof and toward that side toward which said valve initially directs the carburetor discharge,' i

mixing device comprising a plurality of annular fins with reentering spaces therebetween projecting from a carrying member in longitudinally spaced apart relation and increasing in diameter from one end to a central Zone of said member and then decreasing to the other end, a central larger diameter fin being substantially in tangential contact with said manifold side.

ERWIN BAKER. 

